package demo3;

public class Keybord implements IUSBable {

    public void opeanDevice() {
        System.out.println("打开键盘");
    }

    public void closeDevice() {
        System.out.println("关闭键盘");
    }

    public void input() {
        System.out.println("向键盘输入信息");
    }

}
